Your hands are covered in tiny scratches. Your sleeves have holes in them. And the more you try to stop the biting, the more your puppy seems to think it’s a brilliant game.

If that sounds familiar, you’re not doing anything unusual. Puppy biting is normal. Puppies explore with their mouths, play with their mouths, and soothe sore teething gums with their mouths. But some very common reactions, many of them passed on as “good advice,” can accidentally make the biting harder, longer, or more frequent.

This guide covers 12 of the most common puppy biting mistakes, why each one backfires, and what to do instead. You’ll also find a quick-reference table and the signs that mean it’s time to call in a professional.

First: Why Puppies Bite

It helps to know what you’re dealing with. Most puppy biting comes from one of these:

• Play. Puppies wrestle and mouth each other all day. To them, your hands are just another playmate.
• Teething. Most puppies lose their baby teeth somewhere between about 3 and 6 months old, and chewing eases the ache.
• Tiredness. An overtired puppy often gets bitier, not sleepier.
• Too much excitement. Visitors, zoomies, rough play, or a long, busy day.
• Not enough to do. A bored puppy will make their own fun.

The good news is that most puppies bite much less once they’re through teething and have learned better habits. The mistakes below are what can slow that down.

12 Puppy Biting Mistakes (And What To Do Instead)

Mistake 1: Using Your Hands As Toys

Wiggling your fingers in front of your puppy’s face, play-wrestling, or letting them chew your hands “because it’s cute” all teach the same lesson: hands are for biting. It feels harmless at 9 weeks, but it gets a lot less fun as those teeth and jaws grow.

Mistake 2: Pulling Your Hand Away Quickly

It’s a natural reflex. Your puppy bites, you snatch your hand away. But to a puppy, something that suddenly moves away fast is prey. It’s an invitation to chase and bite again, often harder.

Mistake 3: Shouting, Smacking, Or Tapping Their Nose

Physical punishment and shouting don’t teach a puppy what to do. Some puppies get more excited and treat it as rougher play. Others become nervous of hands coming towards their face, which can make them more likely to bite out of fear later on.

Mistake 4: Holding Their Mouth Shut Or “Alpha Rolling”

Some older advice suggests holding the puppy’s mouth closed, pinning them on their back, or “showing them who’s boss.” Modern, evidence-based trainers don’t recommend any of this. It can frighten your puppy, damage their trust in you, and increase the risk of defensive biting.

Mistake 5: Yelping Loudly With Every Puppy

You may have heard that you should yelp like a puppy when you’re bitten. For some puppies, a short “ouch” followed by a pause does help them learn to be gentler. But for many others, a high-pitched squeal is exciting and makes them bite more.

Mistake 6: Letting Your Puppy Get Overtired

This is one of the biggest causes of “crazy biting,” and most owners never suspect it. Young puppies need a lot of sleep, often around 18 hours or more a day. When they miss naps, they don’t get sleepy like adults do. They get wired, mouthy, and harder to calm.

If your puppy turns into a land shark at the same time each evening, it’s often a sign they need a nap, not more play.

Mistake 7: Playing Too Rough Or For Too Long

Long, rough games, wrestling, and chasing games where you run away all build excitement. The more excited a puppy gets, the harder they bite and the less they can listen.

Mistake 8: Not Giving Enough Chew Options

Teething puppies need to chew. If the only interesting things in reach are your hands, ankles, and the sofa, guess what gets chewed.

Mistake 9: Different Rules From Different People

One person lets the puppy chew their hands. Another plays rough. Someone else shouts. Your puppy has no way of knowing which rule applies right now, so they just keep trying.

Mistake 10: Letting Children Run And Squeal

Children running, waving their arms, and squealing look exactly like a fun game to a puppy. It almost always ends in nipped ankles and upset kids.

Mistake 11: Only Focusing On Stopping The Biting

Telling a puppy “no” over and over without showing them what to do instead leaves them guessing. A puppy can’t just “stop.” They need something else to do with all that energy and mouthiness.

Mistake 12: Expecting It To Stop Overnight

It’s easy to feel like nothing is working after a few days. But puppy biting usually fades gradually, not all at once. Many owners give up on a good plan too soon, or keep switching methods, which confuses the puppy.

Puppy Biting Mistakes: Quick-Reference Table

What A Good Puppy Biting Plan Looks Like

A baby gate or playpen makes the “pause” step easy. You can calmly step out of reach without shutting your puppy away for long.

For a full step-by-step method, see our guide on how to stop puppy biting.

The Bitey Stage Doesn’t Last Forever

It can feel endless when you’re living with a little land shark. But avoid these mistakes, give your puppy better options, and stay consistent, and the biting will fade. One day you’ll realise your sleeves are hole-free and your hands have healed.

Frequently Asked Questions

What should you not do when a puppy bites?

Avoid using your hands as toys, snatching your hand away, shouting, smacking, tapping their nose, holding their mouth shut, or pinning them down. These can excite or frighten your puppy and often make biting worse.

Why is my puppy biting more instead of less?

Common reasons include tiredness, over-excitement, teething, rough play, and mixed rules in the household. Check your puppy is getting enough naps, keep play short and calm, and make sure everyone follows the same plan.

Does yelping stop puppy biting?

For some puppies, a short “ouch” and a pause helps them learn to be gentler. But for many puppies, a high-pitched yelp is exciting and makes biting worse. If that happens, skip the noise and just calmly stop the game.

When do puppies stop biting?

Most puppies bite much less once teething is finished, usually around 6 to 7 months old, especially with consistent training. If biting is still frequent after that, or comes with growling or stiffness, talk to your vet or a qualified trainer.